skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Analysis of the Daya Bay Reactor Antineutrino Flux Changes with Fuel Burnup

Abstract

We investigate the recent Daya Bay results on the changes in the antineutrino flux and spectrum with the burnup of the reactor fuel. We find that the discrepancy between current model predictions and the Daya Bay results can be traced to the original measured 235U/ 239Pu ratio of the fission beta spectra that were used as a base for the expected antineutrino fluxes. An analysis of the antineutrino spectra that is based on a summation over all fission fragment beta-decays, using nuclear database input, explains all of the features seen in the Daya Bay evolution data. However, this summation method still predicts an anomaly. Thus, we conclude that there is currently not enough information to use the antineutrino flux changes to rule out the possible existence of sterile neutrinos.

Authors:
 [1];  [2];  [1];  [2];  [3];  [4]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). National Nuclear Data Center (NNDC)
  3. Univ. of Washington, Seattle, WA (United States)
  4. Huzhou Univ., Huzhou (China). School of Science
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1376166
Alternate Identifier(s):
OSTI ID: 1416840; OSTI ID: 1438109
Report Number(s):
BNL-114138-2017-JA; LA-UR-17-26501
Journal ID: ISSN 0031-9007
Grant/Contract Number:
SC0012704; AC02-98CH10886; AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 120; Journal Issue: 2; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Atomic and Nuclear Physics

Citation Formats

Hayes, A. C., Ricard-McCutchan, E. A., Jungman, Gerard, Sonzogni, A. A., Garvey, G. T., and Wang, X. B. Analysis of the Daya Bay Reactor Antineutrino Flux Changes with Fuel Burnup. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.022503.
Hayes, A. C., Ricard-McCutchan, E. A., Jungman, Gerard, Sonzogni, A. A., Garvey, G. T., & Wang, X. B. Analysis of the Daya Bay Reactor Antineutrino Flux Changes with Fuel Burnup. United States. doi:10.1103/PhysRevLett.120.022503.
Hayes, A. C., Ricard-McCutchan, E. A., Jungman, Gerard, Sonzogni, A. A., Garvey, G. T., and Wang, X. B. Fri . "Analysis of the Daya Bay Reactor Antineutrino Flux Changes with Fuel Burnup". United States. doi:10.1103/PhysRevLett.120.022503.
@article{osti_1376166,
title = {Analysis of the Daya Bay Reactor Antineutrino Flux Changes with Fuel Burnup},
author = {Hayes, A. C. and Ricard-McCutchan, E. A. and Jungman, Gerard and Sonzogni, A. A. and Garvey, G. T. and Wang, X. B.},
abstractNote = {We investigate the recent Daya Bay results on the changes in the antineutrino flux and spectrum with the burnup of the reactor fuel. We find that the discrepancy between current model predictions and the Daya Bay results can be traced to the original measured 235U/239Pu ratio of the fission beta spectra that were used as a base for the expected antineutrino fluxes. An analysis of the antineutrino spectra that is based on a summation over all fission fragment beta-decays, using nuclear database input, explains all of the features seen in the Daya Bay evolution data. However, this summation method still predicts an anomaly. Thus, we conclude that there is currently not enough information to use the antineutrino flux changes to rule out the possible existence of sterile neutrinos.},
doi = {10.1103/PhysRevLett.120.022503},
journal = {Physical Review Letters},
number = 2,
volume = 120,
place = {United States},
year = {Fri Jan 12 00:00:00 EST 2018},
month = {Fri Jan 12 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on January 12, 2019
Publisher's Version of Record

Save / Share: